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Published in: European Radiology 10/2012

01-10-2012 | Magnetic Resonance

Prediction of prostate cancer extracapsular extension with high spatial resolution dynamic contrast-enhanced 3-T MRI

Authors: B. Nicolas Bloch, Elizabeth M. Genega, Daniel N. Costa, Ivan Pedrosa, Martin P. Smith, Herbert Y. Kressel, Long Ngo, Martin G. Sanda, William C. DeWolf, Neil M. Rofsky

Published in: European Radiology | Issue 10/2012

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Abstract

Objectives

To assess the value of dynamic contrast-enhanced (DCE) combined with T2-weighted (T2W) endorectal coil (ERC) magnetic resonance imaging (MRI) at 3 T for determining extracapsular extension (ECE) of prostate cancer.

Methods

In this IRB-approved study, ERC 3-T MRI of the prostate was performed in 108 patients before radical prostatectomy. T2W fast spin-echo and DCE 3D gradient echo images were acquired. The interpretations of readers with varied experience were analysed. MRI-based staging results were compared with radical prostatectomy histology. Descriptive statistics were generated for prediction of ECE and staging accuracies were determined by the area under the receiver-operating characteristic curve.

Results

The overall sensitivity, specificity, positive predictive value and negative predictive value for ECE were 75 %, 92 %, 79 % and 91 %, respectively. Diagnostic accuracy for staging was 86 %, 80 % and 91 % for all readers, experienced and less experienced readers, respectively.

Conclusions

ERC 3-T MRI of the prostate combining DCE and T2W imaging is an accurate pretherapeutic staging tool for assessment of ECE in clinical practice across varying levels of reader experience.

Key Points

Endorectal coil (ERC) magnetic resonance imaging is widely used for imaging prostatic disease.
ERC 3-T MRI is reasonably accurate for local prostate cancer staging.
High diagnostic accuracy is achievable across different levels of reader experience.
MRI facilitates therapeutic decisions in patients with prostate cancer.
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Metadata
Title
Prediction of prostate cancer extracapsular extension with high spatial resolution dynamic contrast-enhanced 3-T MRI
Authors
B. Nicolas Bloch
Elizabeth M. Genega
Daniel N. Costa
Ivan Pedrosa
Martin P. Smith
Herbert Y. Kressel
Long Ngo
Martin G. Sanda
William C. DeWolf
Neil M. Rofsky
Publication date
01-10-2012
Publisher
Springer-Verlag
Published in
European Radiology / Issue 10/2012
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-012-2475-5

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